true, it can be very handy to have a BOSS pedal early in your setup as a buffer.
also, the switches used on Digitech and Boss (the only two mass-producers who don't use true-bypass that I can think of), are too different physically from true-bypass switches for them to work without a total revamping of the casing. What I mean is that for a truebypass switch to be installed in a boss pedal, you'd need to totally alter the casing, wouldn't you?